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Today, drawing123.com will guide you how to easily draw a thermometer with simple steps.
Let’s get started!
Step 1: Draw the Upper Body
Start by drawing a long, inverted U-shape slanted to the right. This forms the main upper casing of the thermometer, leaving the bottom end wide open.
Step 2: Form the Neck Curves
Extend the bottom of the two parallel lines slightly downward, curving them inward slightly to begin shaping the narrower neck of the thermometer.
Step 3: Complete the Outer Base
Continue the lines downward from the neck to create a narrower, rounded tip at the very bottom, fully enclosing the outer silhouette of the thermometer.
Step 4: Add the Base Separation Line
Draw a short, slightly curved horizontal line across the narrow neck section near the bottom tip to separate the bulb area from the stem.
Step 5: Outline the Inner Tube
Sketch an elongated, narrow capsule shape inside the main body. This represents the inner capillary tube where the liquid rises, narrowing down as it meets the baseline drawn in the previous step.
Step 6: Mark the Liquid Level
Add a small curved line across the inner tube about halfway up to indicate the top surface level of the liquid.
Step 7: Create Measurement Scale Marks
Draw a series of evenly spaced, short parallel tick marks along the right side of the inner tube to serve as the temperature scale.
Step 8: Color the Thermometer
Fill in your drawing with color to complete the piece. Color the main outer body casing with a soft, light pastel blue. Fill the lower bulb at the bottom tip with a bright yellow. Finally, color the liquid inside the inner capillary tube—up to the indicator line—with a vibrant red, leaving the empty upper half of the inner tube white.
Step 1: Draw the initial outer frame
Draw the upper body of the thermometer casing as a long, inverted U-shape. This outline should have parallel sides and a closed, rounded top.
Step 2: Define the inner glass tube
Extend the outline from Step 1 down to form a rounded bulb at the base. Within the main casing, draw a narrower, centered vertical tube (the capillary tube) starting near the top of the outer casing and running all the way down into the base bulb. This inner tube should terminate in its own rounded bulb structure at the very bottom.
Step 3: Refine the base and inner structure
Connect the base of the outer casing with a curved line to fully enclose the large base bulb. Then, draw a circular shape inside this base bulb that connects directly to the bottom end of the inner capillary tube structure from Step 2, defining the main inner reservoir.
Step 4: Form the fluid column base and division
Within the lower half of the main body, draw a smaller capsule shape connected to the central tube and extending just above the large reservoir bulb. Add a small, separate horizontal curve inside the central tube to mark the base reference level.
Step 5: Create scale markings
Draw a series of horizontal graduation lines of varying lengths along the right side of the main body, between the outer case and the inner tube. Add a small ‘o’ (zero mark indicator) above the reference curve drawn in Step 4.
Step 6: Add numbers and labels to the scale
Label the key graduation marks with numerals to the right of the ticks, counting upwards: ‘0’, ’10’, ’20’, and ’30’. Above the top marking and to the right, add the unit ‘°C’.
Step 7: Add light reflections (highlights)
To make the thermometer look like glass, add segmented light highlights. These are small, curved, elongated shapes. One set is near the upper right edge of the case, and another set is in the lower left curve of the base bulb.
Step 8: Fill with final colors
Fill the main outer glass body with a light, cool blue hue. The main inner fluid column (reservoir bulb and inner tube up to the 20 tick mark) should be solid, bright red. The numerals, the ‘°C’ label, and the scale marks are black, and the glass highlights are white.
Step 1: Forming the Probe Tip
In the lower-left area of the canvas, draw a small, elongated, U-shaped line that curves downward.
Step 2: Extending the Stem
From the open ends of the U-shape drawn in the previous step, extend two parallel straight lines diagonally upward to the right.
Step 3: Creating the Main Body
Starting from the upper ends of the parallel lines from Step 2, curve the lines outward to form the wide, rounded shoulders of the thermometer, and then draw long, straight parallel lines extending further upward.
Step 4: Adding Internal Details
Within the structure created in Step 3, draw a short horizontal line just above the U-shaped probe tip and another short horizontal line just below the top edge of the body.
Step 5: Placing the Power Button
In the middle of the upper part of the thermometer body, draw a small circle between the two horizontal lines added in the previous step.
Step 6: Framing the Display
Below the circular button, draw a rectangular frame with slightly rounded corners in the middle of the main body section.
Step 7: Filling the Display
Inside the rounded rectangular display frame, render the digital read-out of a temperature, including numbers and the degree and Fahrenheit symbols.
Step 8: Applying Colors
Fill the upper section above the top horizontal line with bright blue. Shade the power button in a matching blue. The main thermometer body is light off-white. The display screen is light gray, with the digits and symbols inside it in black. Finally, fill the U-shaped probe tip at the very bottom with medium gray.
Step 1: The Outermost Frame
Begin with the external shape of the entire device. Draw a single, vertical, elongated oval. This shape, resembling a pill, will serve as the outer wooden or plastic backing plate for the thermometer.
Step 2: Adding the Hanging Eyelet
At the very center of the upper curved end of the oval backplate, draw a small, separate circle. Then, inside that small circle, draw another concentric, even smaller circle, forming an eyelet for hanging.
Step 3: Defining the Glass Bulb Base
Now, focus on the inner components. Inside the main vertical body of the oval backplate, near the bottom, draw a single, simple circle. This circle outlines the base of the glass bulb.
Step 4: Drawing the Main Glass Tube
From the circle created in Step 3, extend two parallel, vertical lines upwards. These lines should curve inwards at the top to meet and form a single, rounded dome-like cap. This completes the full outline of the glass thermometer tube.
Step 5: Setting the Initial Reading Level
To begin adding the measurement substance inside the tube, draw a short horizontal line that connects the two vertical lines of the inner tube. This marks the initial temperature level.
Step 6: Graduating the Scale
Next, create the scale markings. On the right side of the inner glass tube, draw a series of small, horizontal tick marks spaced at regular intervals. These marks start from near the bulb base and ascend.
Step 7: Adding Labels and Numbers
Now, assign values to the scale. Beside the specific graduation marks, add numbers (e.g., 0, 10, 20, 30, 40, 50, 60) and place a small ‘°C’ symbol at the top of the scale to indicate the unit of measurement.
Step 8: Final Coloring and Details
The entire background area outside the glass tube, which forms the backplate, is filled with light gray. Inside the glass tube, the main bulb and the entire lower section up to the line you drew in Step 5 are filled with bright red, indicating the current liquid. The upper section of the glass tube above the red liquid is filled with plain white.
Step 1. Form the Lower Body
Begin by drawing a narrow, rounded ‘U’ shape to form the basic outline of the thermometer’s probe tip. Then extend two smooth, divergent curves upward from the open end of the ‘U’ to establish the widening lower body of the thermometer.
Step 2. Complete the Overall Frame
Draw a large, rounded capsule shape that closes the top and forms the main display and battery cover section. This creates the complete outer frame of the thermometer.
Step 3. Create internal contours
Add internal lines that echo the capsule shape, defining the recessed areas for the screen and the battery compartment.
Step 4. Define The Sensor Cap
Draw two short horizontal lines near the top and bottom of the capsule. Add a short vertical line at the top to complete the separate cap area.
Step 5. Outline the Digital Display
Inside the main display area, draw a small, clean rectangle with rounded corners to serve as the digital screen outline.
Step 6. Add the Display
Inside the screen rectangle, render the digital digits “37.5”.
Step 7. Add the Power Button
Draw a concentric circle and a partial arc above the screen to form the power button icon.
Step 8. Apply Color and Final Details
In this final step, color the image. Use a vibrant pink for the main body and power button. For the sensor tip, use silver or light grey. Apply a lighter pink shade for the cap and the power button outline. The internal lines and digits are all black, and the digital display screen has a light blue-grey background.
Step 1. Shape the Upper Body
Start by drawing the top rounded curve and the long, straight, parallel sides of the thermometer, creating a tall, open “U” shape.
Step 2. Form the Neck
Extend the bottom of the long parallel lines. Draw two symmetrical curves that bend inward towards the center, defining the “neck” part where the thermometer narrows.
Step 3. Add the Bottom Bulb
Connect the bottom-most ends of the neck lines with a tight, rounded curve to form the complete bottom bulb. This creates the full outer frame of the thermometer.
Step 4. Create an Internal Line
Add a small, horizontal line just above the curve of the bulb, creating a separate section within the base of the thermometer.
Step 5. Define the Capillary Tube
From the center of the horizontal line drawn in the previous step, extend a long, very thin, internal tube upwards through the center of the main body.
Step 6. Mark the Mercury Level
Draw a short, slightly curved line across the thin internal tube, positioned about midway up, to represent the mercury level reading.
Step 7. Add Scale Markings
On the left side of the inner tube, within the main body, draw a vertical line and then add a series of horizontal scale markings—shorter lines for individual degrees and longer lines for five-degree intervals.
Step 8. Add Temperature Scale Text
Add the degree Celsius symbol (°C) above the top marking. Then, to the right of the internal tube, add the numerical scale in descending order: 40, 39, 38, 37, 36, 35, positioning each number next to the corresponding five-degree longer line.
Step 9. Color the Finished Thermometer
Apply the final colors. The mercury is a vibrant red, rising up to the 37.5 mark. The part above the mercury inside the tube is a light blue. The bottom bulb is a metallic grey, and the thermometer body is a very light blue. The scale numbers and markings remain black.
Hopefully, this drawing tutorial on Thermometer will help you easily create a nice drawing.
